English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The okra (Abelmoschus esculentus) plant consists of bast fiber and core (stick). The bast fibre of okra plant was characterized with high α-cellulose (56.7%) and low lignin (12.6%) and stick withlow α-cellulose (34.3%) and high lignin (25.2%) content. Lignin was isolated from the fiber and stick by acidolytic dioxane method and characterized for elemental analysis, methoxyl analysis and FTIR and 1 H-NMR spectroscopy. The C 9 formulas for okra stick and fibre lignin were C 9 H 9 . 61 O 4.63 (OCH 3 ) 1.24 and C 9 H 8.61 O 4.66 (OCH 3 ) 1.49 , respectively. Both of the lignins were of the guaiacyl-syringyl type. The bands of FT-IR spectrum at 1327 cm- 1 , 1122 cm- 1 and 837 cm- 1 associated with syringyl unit was higher in okra fibre lignin than in the okra stick lignin. The structural analysis revealed that the average numbers of proton of β- O -4 (Hα & Hβ) per C 9 unit in okra stick and fibre lignin were 1.53 and 1.20, respectively. The β- O -4 units in these lignins had predominately erythro stereochemistry type. Bangladesh J. Sci. Ind. Res. 50(4), 257-262, 2015

Isolation and characterization of lignin from okra (Abelmoschus esculentus) fibre and stick